| 1 | BEL | Transportes Aereos Belem Amazonia, S.A. | Callsign: Amazonia, | BR | AVCODES |
| 2 | BEL | Brussels Airlines N.V. | IATA: SN, Callsign: Beeline, IATA Prefix: 082, ICAO Desginator changed from DAT. Name changed from Delta Air Transport N.V. t/a Brussels Airlines. IATA designator changed from QG, ICAO designator changed from DAT | B | AVCODES |
| 3 | BEL | Bus Engineering Limited | London Transport's Aldenham, along with Chiswick, was separated from the bus operating business by the formation of LRT Bus Engineering Limited in April 1985 | GB | TRAFFIC |
| 4 | BELA | BELARDI & SCHNEIDER INC | | | SCAC3 |
| 5 | BELA | BELTRAN FELIX, LEANDRA | | | SCAC4 |
| 6 | BELA | Brussels Airlines | Real: BEL | B | TRAFFIC |
| 7 | BELC | BEITER LINE CORP OPERATED BY LYONS | | | SCAC3 |
| 8 | BELC | Land Component (Belgian Army) | | B | TRAFFIC |
| 9 | BELD | BENSCOTER FOREST PRODUCTS INC | | | SCAC3 |
| 10 | BELE | BEN-LEE MOTOR SERVICE CO | | | SCAC3 |
| 11 | BELF | BELL FUELS INC | | | SCAC4 |
| 12 | BELG | BELGIAN TRANSPORT INC | | | SCAC4 |
| 13 | BELH | BEL AIR MOVING & STORAGE COMPANY | | | SCAC3 |
| 14 | BELI | BELOIN, MARCEL INC | | | SCAC3 |
| 15 | BELJ | BEAL, L J, & SON, INC | | | SCAC3 |
| 16 | BELK | BELL TRANSPORTATION CO INC | | | SCAC3 |
| 17 | BELK | BELAIR, KEVIN TRANSPORT INC | | | SCAC4 |
| 18 | BELL | BELL, JERRY | | | SCAC3 |
| 19 | BELL | BELLEZA, s.r.o. | | SK | VKM |
| 20 | BELLV | Belleville Transit Commission | | CDN | TRAFFIC |
| 21 | BELM | Belmond Ltd. | | GB | TRAFFIC |
| 22 | BELN | BEESON, LARRY TRUCKING | | | SCAC3 |
| 23 | BELO | BELL HOT SHOT DELIVERY SERVICE | | | SCAC3 |
| 24 | BELQ | BELAUSTEGUI, LEON | | | SCAC3 |
| 25 | BELQ | BELLAIR EXPEDITING | | | SCAC4 |
| 26 | BELT | BELT TRANSFER COMPANY, INC | | | SCAC3 |
| 27 | BELU | BELL-MAR SHIPPING LTD | | IL | BIC |
| 28 | BELU | BELL LIJN N V | | | SCAC3 |
| 29 | BELU | BELL-MAR SHIPPING LTD | | | SCAC4 |
| 30 | BELW | BELL TRANSFER | | | SCAC3 |
| 31 | BELW | BELEW TRUCKING | | | SCAC4 |
| 32 | BELX | Brocton Elevator Co. | 8/1920 | | NAKINA |
| 33 | BELX | Belle Haven Foods, Inc. | 7/2000 (not listed) | | NAKINA |
| 34 | BELX | Belle Haven Foods, Inc. | Jul-00 | | NRHS |
| 35 | BELX | *BROCTON ELEVATOR CO. | | | PWRC |
| 36 | BELX | *RETIRED 03-04-91 FET (1983) [BELL PROCESSING INC.] | | | PWRC |
| 37 | BELX | *BELLE HAVEN FOODS, INC. | | | PWRC |
| 38 | BELX | Bell Processing | | | RSRV |
| 39 | BELY | BELL-TRANS SYSTEMS INC | | | SCAC4 |
